eeg waves Flashcards
up to 3 Hz
normal in slow wave sleep
babies and young children
Delta
4-7 Hz
young children
Theta
8-10 Hz
closing eyes- attenuate on opening eyes
Alpha
coma pathology
Pathological Alpha
12-13 Hz
active working
some antidepressants increase activity
Beta
benzodiazepines
Pathological Beta
3Hz bilateral symmetry spike and wave
Absence seizure
focal slow wave activity
focal seizure
periodic tri or bi-phasic sharp waves
CJD
low voltage EEG
huntingtons
generalised theta or delta wave activity
metabolic encephalopathy
deep white matter changes on MRI
depression in the elderly
impaired working memory in schizophrenia
DL PFC impaired activity on fMRI
asymmetrical pattern
vascular dementia
Brief bursts of slow waves during stage 2 NREM sleep
K complexes
12-14 Hz waves that occur during stage 2 sleep with K complexes and are absent in NREM sleep in patients with schizophrenia
sleep spindles
Temporal intermittent rhythmic delta slowing
absence seizures
bilateral synchronous high amplitude spike and slow waves
subacute sclerosing pan encephalitis
3Hz diffuse spike and wave
absence seizures